PASSIVE FIRE PROTECTION • AIR SEALING • SOUND REDUCING • FIRE STOPPING
The ASF Promise
- Guaranteed quality
- Available from stock
- Technical support
- Easy to use
- Third party certified
- Reduced project costs
Did you know the ASF range also saves energy
The Building Regulations 2010 Approved Document L requires the conservation of fuel and power in new and existing buildings. The ASF range is designed to be used in a wide range of applications where the passage of air is required to be restricted.
ASF S291 Intumescent Pressure Sealant
ASF S291 Intumescent Pressure Sealant is an easy to apply waterborne permanently flexible acrylic emulsion sealant containing graphite which expands at temperatures above 135º C sealing around various penetrations and services to prevent the passage of smoke and flames.
ASF S291 Intumescent Pressure Sealant has been designed to expand in fire conditions to seal gaps & holes formed when services and substrates melt/fall away and maintaining the integrity of the fire barrier.
ASF S291 Intumescent Pressure Sealant is an engineered sealant ensuring performance during service life with excellent adhesion and crack resistance when applied as recommended.
ASF S291 Intumescent Pressure Sealant is suitable for both internal and external applications.
- 4 hour rating
- Closes & seals plastic pipes
- Tested in accordance with: BSEN 1366-3 :2004
The following fire ratings have been achieved in controlled test work*
| Service Type | Construction Element | Integrity (minutes) | Insulation (minutes) |
|---|---|---|---|
| Ø110mm Polyethylene Pipe | Gypsum Wall | 60 | 60 |
| Ø110mm Cable Bundle | Gypsum Wall | 120 | 120 |
| Ø110mm PVC Pipe | Masonry Wall | 240 | 240 |
| Cable Trays 150x25x1mm | Masonry Wall | 240 | 180 |
| Ø110mm Polypropylene Pipe | Concrete Floor | 90 | 60 |
| Ø130mm Copper Core Cable | Concrete Floor | 240 | 240 |
The above results show typical integrity levels of the product in a fire situation, however, each joint situation will have different characteristics and therefore different fire ratings. In general it has been found that a greater depth of sealant will provide greater integrity and that the use of a double seal i.e. sealant applied at both external faces of a joint will increase values further.
*A full approval of the product is contained in Certifire Certificate of Approval No. CF 830
The Certifire report details tests carried out on the material when tested against the performance criteria of BSEN 1366-4:2004
ASF S291 Intumescent Pressure Sealant is recommended for use where a flexible and durable fire resistant seal is required. Suitable applications include installations where the sealant is required to exert a positive pressure in the joint design preventing passage of smoke, gas/vapour or liquids in the event of a fire. Suitable applications include designed joints around:
- Combustible and non-combustible pipes (plastic and metal)
- Cables ( single cables or bunches of cables or cable trays)
- Other permanent services
- Floor, wall and ceiling services
- Suitable substrates include concrete, metals, drywall, plastics, masonry, fire rated panels and ceramics
| Joint Size (mm) | 3 x 6 | 6 x 6 | 9 x 6 | 12 x 6 | 20 x 10 | 7 x 7 fillet | 10 x 10 fillet |
|---|---|---|---|---|---|---|---|
| Linear metres per Cartridge | 17.2 | 8.6 | 5.7 | 4.3 | 1.5 | 12.6 | 6.2 |
For circular gaps or holes, calculate the requirement using: Volume of a cylinder = π x r2 x depth = 3.142 x (Diameter ÷ 2)2 x depth Number of cartridges required = (Volume of hole - Volume of pipe/service) ÷ 310
ASF S291 Intumescent Pressure Sealant is available in 310ml rigid plastic cartridges.
ASF, a comprehensive range of sealants, wraps and boards for the fire safety market, is launched.
ASF, a comprehensive range of sealants, wraps and boards for the fire safety market, is launched.
Polyseam, the own brand developer and manufacturer of sealants, adhesives and fillers announced … more
Where applicable the ASF range has Certifire third party certification, which gives the regulator, specifier, installer, customer and end user confidence in the stated performance and field of application of the ASF passive fire protection range.
Expert guidance and technical support
ASF provides guidance in the use and installation of the ASF range. Guides are available along with telephone support giving advice on use, installation and performance.
Specifying ASF products
Architects, specifiers and installers can be assured that when ASF products are selected that they will meet the key requirements of quality, performance and ease of installation.
Interested in stocking the ASF range?
If you would like to stock the ASF Pro range of products please contact us at sales@asf-products.com
ASF has a programme of continued product development and reserves the right to change product specification without prior notice.
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